16 February 2006 Secret dither estimation in lattice-quantization data hiding: a set membership approach
Author Affiliations +
Abstract
In this paper, security of lattice-quantization data hiding is considered under a cryptanalytic point of view. Security in this family of methods is implemented by means of a pseudorandom dither signal which randomizes the codebook, preventing unauthorized embedding and/or decoding. However, the theoretical analysis shows that the observation of several watermarked signals can provide sufficient information for an attacker willing to estimate the dither signal, quantifying information leakages in different scenarios. The practical algorithms proposed in this paper show that such information leakage may be successfully exploited with manageable complexity, providing accurate estimates of the dither using a small number of observations. The aim of this work is to highlight the security weaknesses of lattice data hiding schemes whose security relies only on secret dithering.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Luis Pérez-Freire, Fernando Pérez-Gonzalez, Pedro Comesaña, "Secret dither estimation in lattice-quantization data hiding: a set membership approach", Proc. SPIE 6072, Security, Steganography, and Watermarking of Multimedia Contents VIII, 60720W (16 February 2006); doi: 10.1117/12.642688; https://doi.org/10.1117/12.642688
PROCEEDINGS
12 PAGES


SHARE
RELATED CONTENT

Security of spread-spectrum-based data hiding
Proceedings of SPIE (February 27 2007)
Security analysis of robust perceptual hashing
Proceedings of SPIE (March 18 2008)
Applied public-key steganography
Proceedings of SPIE (April 29 2002)
A novel interpretation of content authentication
Proceedings of SPIE (March 01 2007)
Steganalysis of block-structured stegotext
Proceedings of SPIE (June 22 2004)

Back to Top